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Expired Canadian patentCanada

Method of and device for decoding a block of code symbols which is distributed between code words in two ways, each code word being protected by a maximum distance separable code

CA 1293327 C · Owner: Koninklijke Philips Electronics N.V. · Inventors: Baggen, Constant P.M.J.

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Abstract From the Canadian patent

PHN.11.771 23 4.12.86, ABSTRACT:, Method of and device for decoding a block of code symbols which is distributed between code words in two ways each, code word being protected by a maximum distance separable code. A block of code symbols is protected by a product code or a pseudo product code. First of all all syndrome, symbols are formed and all code words having a syndrome which deviates from zero are provided with a flag. Each nonredundant symbol forms part of a first code word and also of a second code word, the numbers of flags of first and second code words being separately summed. The code words are successively addressed and an error location is determined. When an error location …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted December 17, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 17, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 4, 1987
GrantedDecember 17, 1991
Term endedDecember 17, 2008
Patent numberCA 1293327 C
Classification (IPC)H03M13/00 +1 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedJune 4, 1987Patent grantedDec 17, 1991Term endedDec 17, 2008

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.